US7320150B2ExpiredUtilityA1

Automatic dust pan broom

Assignee: STEWART PIERREPriority: Jul 21, 2003Filed: Jul 14, 2004Granted: Jan 22, 2008
Est. expiryJul 21, 2023(expired)· nominal 20-yr term from priority
Inventors:Pierre Stewart
A46B 2200/302A47L 5/28
39
PatentIndex Score
3
Cited by
6
References
7
Claims

Abstract

A broom ( 20 ) which permits picking up dust and disposing of said dust while standing up. The broom ( 20 ) comprises an aspiration canal ( 24 ) in the broom brush ( 22 ), reaching an aspiration tubing situated inside the broom handle ( 26 ). The aspiration tubing is ended by a removable cap ( 28 ). A motor ( 34 ) is situated alongside the tubing and permits the aspiration of air through the aspiration canal and aspiration tubing by an opening ( 32 ) along the tubing side. The opening is made of a semi permeable membrane ( 38 ) which allows air to exit the tube while keeping dust inside. The broom inside tubing comprises means to keep the dust inside the tubing, so the dust does not fall out through the bottom of the tubing. After the broom operator has finished aspiring the dust inside the broom handle, he may remove the cap, turn the broom upside down, and empty the dust into. All this without bending down.

Claims

exact text as granted — not AI-modified
1. A broom ( 20 ) which permits dust collection and disposal by an operator which remains standing up, said broom comprising: a hollow aspiration tubing ( 26 ) consisting of a cylindrical wall ( 30 ) comprising a lower opening ( 25 ) and an upper opening ( 28 ), a brush ( 22 ) situated towards the lower end ( 24 ) which comprises an opening corresponding to said lower opening, to permit the flowing of air to the inside of said aspiration tubing, a removable cap ( 28 ) to open and close said upper opening, air aspiration means that may be activated to cause an airflow from said lower opening up inside the aspiration tubing, and out of the aspiration tubing, said aspiration means being localized outside of said aspiration tubing and comprising means to keep dust particles inside said tubing while air flows out, retention means to keep dust particles inside said aspiration tubing when said aspiration ceases, said retention means permitting said dust particles to flow out by said upper opening when said cap is removed and said broom is turned upside-down, wherein said retention means consist of a number of dust collectors consisting of discs which are installed along said wall thus leaving a central channel for air and dust circulation. 
   
   
     2. A broom ( 20 ) which permits dust collection and disposal by an operator which remains standing up, said broom comprising: a hollow aspiration tubing ( 26 ) consisting of a cylindrical wall ( 30 ) comprising a lower opening ( 25 ) and an upper opening ( 28 ), a brush ( 22 ) situated towards the lower end ( 24 ) which comprises an opening corresponding to said lower opening, to permit the flowing of air to the inside of said aspiration tubing, a removable cap ( 28 ) to open and close said upper opening, air aspiration means that may be activated to cause an airflow from said lower opening up inside the aspiration tubing, and out of the aspiration tubing, said aspiration means being localized outside of said aspiration tubing and comprising means to keep dust particles inside said tubing while air flows out, retention means to keep dust particles inside said aspiration tubing when said aspiration ceases, said retention means permitting said dust particles to flow out by said upper opening when said can is removed and said broom is turned upside-down, said cylindrical wall ( 30 ) further comprising a central rod inside said aspiration tubing, and wherein said retention means consist of a number of dust collectors consisting of discs extending outwardly from said rod thus leaving an external channel for air and dust circulation. 
   
   
     3. The broom of  claims 1  or  2  wherein said brush consists of a horizontal support holding vertical strands extending downwardly from said support, and wherein said vertical support comprises an opening extending from one side of said support to said lower opening. 
   
   
     4. A broom ( 20 ) which permits dust collection and disposal by an operator which remains standing up, said broom comprising: a hollow aspiration tubing ( 26 ) consisting of a cylindrical wall ( 30 ) comprising a lower opening ( 25 ) and an upper opening ( 28 ), a brush ( 22 ) situated towards the lower end ( 24 ) which comprises an opening corresponding to said lower opening, to permit the flowing of air to the inside of said aspiration tubing a removable cap ( 28 ) to open and close said upper opening, air aspiration means that may be activated to cause an airflow from said lower opening up inside the aspiration tubing, and out of the aspiration tubing, said aspiration means being localized outside of said aspiration tubing and comprising means to keep dust particles inside said tubing while air flows out, retention means to keep dust particles inside said aspiration tubing when said aspiration ceases, said retention means permitting said dust particles to flow out by said upper opening when said cap is removed and said broom is turned upside-down, said cylindrical wall comprising a lateral opening and said means to keep dust in comprising a semi permeable membrane covering said lateral opening, said aspiration means comprising an air exhaust, disposed against said lateral opening in order to aspire air from said aspiration tubing, through said semi permeable membrane and to said air exhaust. 
   
   
     5. The broom of  claim 4  wherein said semi permeable membrane is made of a filtering material. 
   
   
     6. The broom of  claim 4  wherein said lateral opening is situated at least at ⅝ of the total distance between said lower and upper openings. 
   
   
     7. The broom of  claim 4  wherein said lateral opening is situated within 66% to 90% of the total distance between said lower and upper openings.

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